- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373223 > R1225N572K-TR SMPS Controller PDF資料下載
參數(shù)資料
| 型號： | R1225N572K-TR |
| 英文描述： | SMPS Controller |
| 中文描述： | 開關(guān)電源控制器 |
| 文件頁數(shù)： | 9/29頁 |
| 文件大?。?/td> | 450K |
| 代理商： | R1225N572K-TR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當前第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁
12345
Rev. 1.11 - 9 -
I
TIMING CHART
Case 1. Set V
OUT
Voltage >2.1V (Set V
OUT
Voltage>UVLO Voltage)
VIN
CE
EXT
VOUT
UVLO Voltage
VOUT Set Output Voltage
Soft Start
CE Reset
Latch Protection
Stable Operation
UVLO Reset
Input Voltage
Rising Time
Protection Circuit Delay Time
VOUT Set Output Voltage
Protection Circuit Delay Time
VOUT Set Output Voltage
Latch Protection
VOUT Set Output Voltage
Stable Operation
Stable Opera
Soft Start
Soft Start
The timing chart shown above describes the changing process of input voltage rising, stable operating,
operating with large current, reset with CE pin, stable operating, input voltage falling, input voltage recovering,
and stable operating.
First, until when the input voltage (V
IN
) reaches the set output voltage, the circuit inside keeps the condition of
pre-standby.
Second, after V
IN
becomes beyond the set output voltage, soft-start operation starts, when the soft-start
operation finishes, the operation becomes stable.
If too large current flows through the circuit because of short or other reasons, EXT signal ignores that during
the delay time of protection circuit. (The current value depends on the circuit.)
After the delay time passes, the latch protection works, or EXT signal will be "H", then output will turn off. To
release the latch protection, input voltage should be equal or lower than UVLO level, or restart with CE (Once
turn off the circuit with CE and turn it on again). In the timing charge above, release the latch function is
realized with CE signal from "L" to "H". After removing the cause of large current and the reset with CE, soft-
start operation starts and after the soft-start time, the operation will be back to stable.
If the V
IN
becomes lower than the set V
OUT
, that situation is same as large current condition, so protection
circuit may be ready to work, therefore, after the delay time of protection circuit, EXT will be "H" and the output
turns off.
Further, if the V
IN
is lower than UVLO voltage, the circuit inside will be stopped by UVLO function.
After that, if V
IN
rises, until when the V
IN
reaches the set output voltage, the circuit inside keeps the condition
of pre-standby.
Then after V
IN
becomes beyond the set output voltage, soft-start operation starts, when the soft-start
operation finishes, the operation becomes stable.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R1250V2.01A- | Analog IC |
| R1250V2.01A-E2 | Analog IC |
| R1250V2.11A- | Analog IC |
| R1250V2.11A-E2 | Analog IC |
| R1250V2.21A- | Analog IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R122BA19.38.62 | 功能描述:12 AWG 2C 19/25 BC .009" PVC RoHS:是 類別:線纜，導線 >> 多芯導線 系列:* 標準包裝:1 系列:* |
| R122BA19.40.62 | 功能描述:12 AWG 2C 19/25 BC .009" PVC RoHS:是 類別:線纜，導線 >> 多芯導線 系列:* 標準包裝:1 系列:* |
| R122BA19.41.01 | 功能描述:2C/12 19/.0185BC UNSH CL3R RoHS:是 類別:線纜，導線 >> 多芯導線 系列:* 標準包裝:1 系列:* |
| R122BA19.41.06 | 功能描述:12 AWG 2C 19/25 BC .009" PVC RoHS:是 類別:線纜，導線 >> 多芯導線 系列:* 標準包裝:1 系列:* |
| R122BA19.41.62 | 功能描述:2C/12 19/.0185BC UNSH CL3R RoHS:是 類別:線纜，導線 >> 多芯導線 系列:* 標準包裝:1 系列:* |
發(fā)布緊急采購，3分鐘左右您將得到回復。